CN112033624B - Device for measuring ground pressure distribution of tire in coating state - Google Patents

Device for measuring ground pressure distribution of tire in coating state Download PDF

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Publication number
CN112033624B
CN112033624B CN202011009855.2A CN202011009855A CN112033624B CN 112033624 B CN112033624 B CN 112033624B CN 202011009855 A CN202011009855 A CN 202011009855A CN 112033624 B CN112033624 B CN 112033624B
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base
tire
triangular
coating
triangular coating
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CN112033624A (en
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程洪方
周天明
张晓军
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Sailun Jinyu Group Co Ltd
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Sailun Jinyu Group Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Tires In General (AREA)

Abstract

The invention discloses a device for measuring the distribution of ground pressure under a tire cladding state, and belongs to the technical field of tire performance testing. The technical scheme is as follows: the triangular coating device comprises a base and a plurality of triangular coating blocks, wherein a plurality of first grooves are formed in the bottoms of the triangular coating blocks, and guide columns are arranged on the base corresponding to the first grooves; the base is provided with a pressure sensor at the bottom of the triangular coating block, and the pressure sensor is electrically connected with a data acquisition system through a transmission line. The invention can measure the distribution condition of the test pressure in the transverse direction of the contact surface of the tire and the triangular coating block under the working condition of coating rigidity test, and is used for representing the performance of the tire.

Description

Device for measuring ground pressure distribution of tire in coating state
Technical Field
The invention relates to the technical field of tire performance testing, in particular to a device for measuring the distribution of ground pressure under a tire cladding state.
Background
In the field of tire performance testing, a tire coating rigidity test and a tire static grounding pressure distribution test are important characterization means for evaluating the over-threshold comfort of a tire in the use process, the coating rigidity test is used for testing the stress change of the tire from the tire pressure to a raised obstacle and evaluating the capacity of the tire for the obstacle accommodation, and the tire static grounding pressure distribution test is used for measuring the pressure distribution condition of the tire and a ground base surface.
For the tire coating rigidity test, no current national standard exists in China at present, the SAE J2705 standard commonly used in the industry specifies the method and the process of the coating rigidity test, and also specifies the shape and the parameters of a coating block (as shown in figure 1). However, the test method specified in the standard can only use a sensor on loading equipment to measure the stress condition of the whole tire in the loading process, cannot measure the pressure distribution of the contact surface of the tire and the coating block under the coating working condition, and does not have a measurement method related to the content.
For static grounding pressure distribution test, there is currently the existing national standard "GB/T22038 tire static grounding pressure distribution test method", in which a test method of grounding pressure distribution when the ground is a plane is specified, including a test equipment style (as shown in fig. 2), parameters, and a test process, but the test is a planar pressure sensor, which is a soft sensor sheet, and is only suitable for a test condition where the ground is a plane, and cannot be used under a coating condition protrusion condition. And the standard also does not relate to the pressure distribution test of the contact surface of the tyre and the coating block under the coating working condition.
Under the cladding rigidity test working condition, the pressure distribution condition of the contact surface of the tire and the cladding block has very important significance for the design and improvement of the tire structure.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device for measuring the distribution of the ground pressure under the tire cladding state can measure the distribution condition of the test pressure on the transverse direction of the contact surface of the tire and the triangular cladding block under the cladding rigidity test working condition, and is used for representing the performance of the tire.
The technical scheme of the invention is as follows:
the device for measuring the distribution of the ground pressure in the tire coating state comprises a base and a plurality of triangular coating blocks, wherein a plurality of first grooves are formed in the bottoms of the triangular coating blocks, and guide columns are arranged on the base corresponding to the first grooves; the base is provided with a pressure sensor on the bottom of the triangular coating block, and the pressure sensor is electrically connected with a data acquisition system through a transmission line.
Preferably, a supporting table is arranged on the base, the guide post is arranged on the supporting table, a second groove is formed in the position, corresponding to the supporting table, of the triangular coating block, and the pressure sensor is arranged on the supporting table.
Preferably, through holes which are communicated with each other are arranged on the supporting platform and the base corresponding to the bottom of the triangular coating block, and the through holes on the base extend out of one side of the base.
Preferably, a plurality of bolt holes are arranged on the base.
Compared with the prior art, the invention has the following beneficial effects: the device can measure the distribution condition of the test pressure in the transverse direction of the contact surface of the tire and the triangular coating block under the coating rigidity test working condition, and can be used for guiding the design and optimization of the tire structure.
Drawings
Fig. 1 is a schematic structural view of a conventional tire coating rigidity testing apparatus.
Fig. 2 is a schematic structural diagram of a conventional static grounding pressure distribution testing apparatus.
Fig. 3 is a combined state diagram of the apparatus of the present invention.
Fig. 4 is a diagram of the state of use of the device of the present invention.
Fig. 5 is a schematic structural diagram of the triangular coating block of the present invention.
Fig. 6 is an exploded view of the device of the present invention.
FIG. 7 is a schematic view of the structure of the through holes on the support and base of the present invention.
In the figure, 1-base, 2-triangle coating block, 3-first groove, 4-guide post, 5-pressure sensor, 6-transmission line, 7-data acquisition system, 8-support table, 9-second groove, 10-through hole and 11-bolt hole.
Detailed Description
Example 1
As shown in fig. 1 to 7, the present embodiment provides a device for measuring ground pressure distribution under a tire coating state, which includes a base 1 and a plurality of triangular coating blocks 2, wherein two first grooves 3 are symmetrically arranged at the bottom of the triangular coating blocks 2, guide posts 4 are arranged at positions of the base 1 corresponding to the first grooves 3, and the triangular coating blocks 2 are arranged on the base 1 along the length direction of the base 1 through the first grooves 3 and the guide posts 4; the base 1 is provided with a pressure sensor 5 on the bottom position of the triangular coating block 2, the pressure sensor 5 is electrically connected with a data acquisition system 7 through a transmission line 6, and the data acquisition system 7 is an existing device and is used for converting signals measured by the pressure sensor 5.
The pressure sensors 5 with the same number as the triangular coating blocks 2 are sequentially fixed on the base 1 along the length direction of the base 1, and the transmission lines 6 of the pressure sensors 5 are integrated and then connected into a data acquisition system 7, so that the data measurement and acquisition work is completed together. The triangular cover block 2 is then placed over the pressure sensor 5 by aligning the two cylindrical recesses at the bottom of the triangular cover block 2 with the two guide posts 4 across the width of the base 1. The guide post 4 enables the triangular coating block 2 to move up and down only by taking the guide post 4 as a reference and can not move left and right.
When the device of the embodiment is used for measuring the ground contact pressure distribution of the tire in a coating state, a loading device is used for loading the tire to the device of the embodiment with a certain load, the triangular coating blocks 2 form the contact surface of the tire and the coating blocks, and the pressure sensors 5 at the bottom of each triangular coating block 2 can separately transmit the pressure at different positions in the transverse direction of the tire, so that the pressure distribution conditions of the contact surface formed by the tire and the triangular coating blocks 2 at different positions in the transverse direction can be measured.
Example 2
On the basis of embodiment 1, a supporting table 8 is arranged on the base 1, the guide posts 4 are arranged on the supporting table 8, a second groove 9 is arranged at the position, corresponding to the supporting table 8, of the triangular coating block 2, and the pressure sensor 5 is fixed on the supporting table 8.
The base 1 and the support platform 8 of this embodiment are structure as an organic whole, and the guide post 4 can be structure as an organic whole with base 1 and support platform 8 in the course of working, also can fix on support platform 8 with removable modes such as screw thread. The pressure sensor 5 is fixed to the support 8 at an intermediate position in the longitudinal direction. In this embodiment, the supporting platform 8 is disposed on the base 1 to further limit the triangular coating block 2 from moving left and right together with the guide post 4, so as to ensure that the triangular coating block can only move up and down.
Example 3
On the basis of the embodiment 2, through holes 10 which are mutually communicated are arranged on the positions of the supporting platform 8 and the base 1 corresponding to the bottom of the triangular coating block 2, and the through holes 10 on the base 1 extend out from one side of the base 1.
The transmission line 6 of the pressure sensor 5 is extended out to one side of the base 1 through the through hole 10, so that the whole device is tidier and more attractive.
Example 4
On the basis of embodiment 1, be provided with a plurality of bolt hole 11 on the base 1, fix base 1 to test platform through the screw (be provided with the screw hole on the test platform) for whole device is steady more in the testing process, more is favorable to going on of test.
Although the present invention has been described in detail in connection with the preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (3)

1. Device for measuring the distribution of the ground pressure in a tyre in a wrapped condition, characterized in that: the triangular coating device comprises a base (1) and a plurality of triangular coating blocks (2), wherein a plurality of first grooves (3) are formed in the bottoms of the triangular coating blocks (2), guide posts (4) are arranged at positions, corresponding to the first grooves (3), of the base (1), and the triangular coating blocks (2) are arranged on the base (1) along the length direction of the base (1) through the first grooves (3) and the guide posts (4); the base (1) is provided with pressure sensors (5) at the bottom of the triangular coating block (2), the pressure sensors (5) with the same number as the triangular coating block (2) are sequentially fixed on the base (1) along the length direction of the base (1), and the pressure sensors (5) are electrically connected with a data acquisition system (7) through transmission lines (6); a supporting table (8) is arranged on the base (1), the guide columns (4) are arranged on the supporting table (8), second grooves (9) are formed in the positions, corresponding to the supporting table (8), of the triangular coating blocks (2), and the pressure sensors (5) are arranged on the supporting table (8).
2. The apparatus for measuring distribution of ground pressure under a wrapped condition of a tire according to claim 1, wherein: through holes (10) which are communicated with each other are formed in the positions, corresponding to the bottoms of the triangular coating blocks (2), of the supporting table (8) and the base (1), and the through holes (10) in the base (1) extend out of one side of the base (1).
3. The apparatus for measuring distribution of ground pressure under a wrapped condition of a tire according to claim 1, wherein: the base (1) is provided with a plurality of bolt holes (11).
CN202011009855.2A 2020-09-23 2020-09-23 Device for measuring ground pressure distribution of tire in coating state Active CN112033624B (en)

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CN202011009855.2A CN112033624B (en) 2020-09-23 2020-09-23 Device for measuring ground pressure distribution of tire in coating state

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CN112033624B true CN112033624B (en) 2022-09-27

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114509204B (en) * 2021-12-23 2024-01-02 赛轮(沈阳)轮胎有限公司 Method for measuring stress and strain of all-steel radial tire after inflation

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